The documentation for the registry key Keying Action Mode is not complete. Below is how it exists in the current documentation:
Keying Action Mode
Type: REG_DWORD, Default: 2
Controls how field skipping works when the TEACTION KEY and TEACTION ENTER tags execute. By default, and with Screensurfer Version 1, if the number of characters in a keystring exceeds the amount of space in the current entry field (at the screen cursor location), the TEACTION tag will skip to the next entry field to continue keying.